JP3069044B2 - Electromagnetic coupling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic coupling device for connecting and disconnecting transmission of rotational torque and braking of a rotating body by energizing and de-energizing an electromagnetic coil. And an electromagnetic coupling device having an electromagnet including a resin-made terminal block fixed to the rear surface of the electromagnetic coupling device.

[0002]

2. Description of the Related Art An electromagnetic coupling device applied to a compressor as prior art 1 is disclosed, for example, in Japanese Patent Application Laid-Open No. Hei 2-253014. As shown in FIGS. 9 and 10, the electromagnetic coupling device includes a yoke 300 in which an electromagnetic clutch 100 is fixed to a housing of a compressor (not shown) via a mounting plate 200. The electromagnetic coil 400 is provided in the annular groove 300a of the yoke 300. The cylindrical portion 500 of the housing includes a rotor 60 having an annular groove 106a.
0 is supported via a bearing 700 so as to be rotatable and restricted from moving in the axial direction. The yoke 300 is loosely fitted in the annular groove 106a.

On the other hand, a hub 109 formed in a cylindrical shape with a flange is axially attached to a distal end portion of a drive shaft 800 of the compressor that passes through the cylinder 500, and is fixed to the drive shaft 800 by bolts 210. Leaf spring 11 mounted on hub collar 109a
1 includes an armature 112 formed entirely in a wheel plate shape.
Are mounted with the friction surface 112a facing the friction surface 106b of the rotor 600.

Reference numeral 115 denotes a pulley, which is connected to a pulley provided on a crankshaft of an automobile engine by a belt, and is configured to constantly rotate with the rotor 600 by rotation of the engine. 160 is the yoke 3
00 and a terminal block constituting the electromagnet 170,
The electromagnetic coil 400 is connected to an external electric circuit via the terminal block 160. The armature 112 is magnetically attracted to the rotor 600 by on / off control of the electric circuit, and the rotation of the rotor 600 is transmitted to the drive shaft 800.

[0005] The terminal block 160 is fixed to the back surface of the yoke 300 in which the electromagnetic coil 400 is provided via a mounting plate 200, and forms an electromagnet 170 together with the yoke 300. The terminal block 160 has an opening 118a on one surface facing forward.
, A flange 119, 120 protruding from both side surfaces of the box 118, and a bottomed rectangular housing 121 protruding downward from the box 118.

A pair of terminals 130 and 131 extend parallel to each other and downward in box 118 from the connection end with electromagnetic coil 400, and the other end extends from box 118 to housing 121.
It is connected to an electric circuit via a plug in the female housing 121 that projects inward and fits outside the housing 121.

The winding ends of the excitation coils of the terminals 130 and 131 and the winding ends 104a and 104b
2 is press-fitted. In a space S formed between the terminals 130 and 131, a diode 133 is housed and disposed in a case 134.
The 33 lead wires 135 are bridged and connected to slits 136 formed in the terminals 130 and 131.

In prior art 2, as shown in FIGS. 11 to 13, in a yoke 300 similar to the yoke 300 shown in prior art 1, the end 104a of the winding of the electromagnetic coil 400 is pulled out and the first After connecting to the lead wire 405a, the end of the first lead wire 405a is attached to the mounting plate 200.
After passing through a provided insertion hole (not shown) , it is connected to the connector 406, and the other end of the electromagnetic coil 400.
Other interpolation being kicked set to 104a to the mounting plate 200
Hole ground against the mounting plate 200 on which passed through a (not shown)
There are things to continue.

The second lead wire 408 has one end and
At the other end, first and second male connectors 407a, 407b
Are joined together. The third lead wire 501
At one end and the other end, a crimp terminal 502 and a connection terminal 5
04 are respectively joined. Second lead 408
And the third lead wire 501, a diode 133
Dio including a pair of lead wire portions 133a and 133b
A door assembly. One end of lead wire portion 133a
Is the second lead wire 4 together with the first male connector 407a.
08 and one end of the diode 133
It is connected to one end surface in the axial direction. One of the lead portions 133b
The end is connected to the third lead wire 501 via the crimp terminal 502.
The other end is the axis of the diode 133
To the other end face. Therefore, the diode 13
3 is one end of the second lead 408 and the third lead 50
A pair of lead wires 133a, 133b
It is tied through. Further, the second lead wire 40
8 and a part of the third lead wire 501 are insulative.
And is surrounded by a tube 409 having
Accordingly, one end of the third lead wire 501 and the lead wire portion 1
The leakage at the junction with 33b is prevented,
Damage to the diode assembly due to external forces is prevented.

[0010]

However, in the electromagnetic coupling device shown in the prior art 1, the ends 104a and 104b of the terminals 130 and 131 arranged in parallel with each other are press-fitted into the slits 132 of the pair of terminals 130 and 131. And end 1
04a, 104b and a pair of terminals 130, 1
31 lead 136 of the diode 133
35 is bridged over and connected, the terminals 130, 1
31 becomes complicated.

Also, the ends 104 of the terminals 130 and 131
Therefore, the lead wires 135a and 104b and the lead wire 135 of the diode 133 must be separately press-fitted into the slits 132 and 136 of the terminals 130 and 131, which is troublesome.

Also, the ends 104 of the terminals 130 and 131
Since a and 104b are pulled out to the outside and then inserted into the terminal block 160, the ends 104a and 104b are exposed to the outside, and it takes time and effort to insert the ends 104a and 104b into the terminal block 160. There's a problem.

Further, in the prior art 2, one of the winding ends 104a, 104b of the electromagnetic coil 400 is connected to the mounting plate 200 at the ground, while the other winding end 104b is grounded. The end 104a is the first lead wire 4
05a is connected to the connector 406, the first lead wire 4 covered with the covering member
The cover member 05a must be stripped and then connected to the connector 406, which causes a problem that the connection is troublesome.

The lead wire portion 13 of the diode assembly
3a and 133b are connected to one end of the second lead wire 408, respectively.
End and one end of the third lead wire 501 respectively.
And there is a problem that this also requires time and effort .

Therefore, an object of the present invention is to provide an electromagnetically conductive connection between a lead wire and an end of a winding by a simple operation.
It is to provide a coupling device.

Another object of the present invention is to provide an electromagnetic link which can easily obtain a waterproof structure by curing an uncured resin material.
It is to provide a sizing device.

[0017]

According to the present invention, there is provided an annular yoke in which an electromagnetic coil is provided, and an insulating case fixed to the yoke, wherein the yoke is fixedly fitted with the electromagnetic coil. A first ring portion, a second ring portion disposed outside the first ring portion, and one end of the first and second ring portions. An electromagnetic coupling device having a bottom portion connected to the side, wherein the bottom portion has a through hole for leading both ends of a winding of the electromagnetic coil, and the case is formed from the through hole.
It has a case hole leading to the inside of the case,
A first groove for fitting each of the ends of the windings guided from the through hole and the case hole into the case in a direction away from each other; A second groove parallel to the groove and fitting each of the lead portions of the diode; and a third groove intersecting the first and second grooves.
There is formed, further has a pair of terminal members connected to the lead wire so as to conduct an end of the lead portion and the winding enters the groove portion of the third, the terminal member is the third groove electromagnetic coupling device is obtained which is characterized in that it has a connection piece in which a slit is formed to fit with press-fit into respective ends of the lead portions and the winding being passed bridge.

[0018]

1 to 5 show an electromagnetic link according to the present invention.
1 shows an embodiment of a binding device. In addition, this electromagnetic
Since the connecting device has a configuration similar to that of the related art 1 except for a part thereof, the description of the same components as the related art 1 is omitted.

First, with reference to FIGS. 1 to 4, this electromagnetic coupling device is configured such that the electromagnetic clutch 100 shown in FIG. 9 is mounted on a housing of a compressor (not shown) (corresponding to the mounting plate 200 shown in FIG. 9). 9) The yoke fixed via the
(Corresponding to the yoke 300 shown in FIG. 3). As shown in FIGS. 2 and 3, the yoke 3 has an electromagnetic coil 5 and a cylindrical ring body 6 accommodating the electromagnetic coil. The ring body 6 includes a first ring portion 6a, a second ring portion 6b disposed coaxially outward with a predetermined distance from the first ring portion 6a, and first and second ring portions 6a, 6b. 6b, which has a bottomed portion 6c interconnecting the one end 6b at one end.

A through hole 7 is formed in the bottomed portion 6c and the mounting plate 1 so that both ends 5a and 5b of the winding (enameled wire) of the electromagnetic coil 5 are directly penetrated and led out of the bottomed portion 6c. Both ends 5a and 5b of the wire penetrate. The electromagnetic coil 5 is fitted into the ring body 6, and thereafter the electromagnetic coil 5 is fixed to the ring body 6 with a resin material.

That is, the through hole 7 having the same shape is opened in the bottomed portion 6c and the mounting plate 1 at the same position corresponding to the time of assembly.

A connector 11 is fixed by caulking above the through hole 7 formed in the mounting plate 1 shown in FIG. 1 by, for example, a claw formed in the through hole 7 of the mounting plate 1. The connector 11 includes an insulating case 13 having an open upper surface, winding ends 5a and 5b inserted into the case 13, a diode 15, and two lead wires 18a and 18b. It has two conductive terminal members 19a and 19b connected to one end. A plug connector 21 for supplying power to the winding is connected to the other ends of the two lead wires 18a and 18b.

At the bottom of the case 13, the center of the ring 6
A pair of case holes 23 are formed at positions symmetrical to the left and right with respect to the virtual straight line including . Both ends 5a and 5b of the winding are inserted into each of the case holes 23. Inside the case 13, a pair of first and second pairs of left and right extending from a pair of case holes 23 to a virtual straight line including the center of the ring body 6 to fit each of the ends 5 a and 5 b of the winding. One groove 25 and a pair of second grooves 27 provided in parallel with the first groove 25 are formed.
You. The ends 5a and 5b of the windings are fitted into the first groove 25 in such a manner as to be bent away from each other. The leads 15a and 15b on both sides of the diode 15 are fitted in the second groove 27 in a direction away from each other. That is, the ends 5a and 5b of the winding and the diode 15
Are fitted so as to be parallel to each other.

Further, inside the case 11, a pair of third groove portions is provided in a direction (second direction) intersecting the first and second groove portions 25, 27 and left and right with respect to the center axis of the ring body. 2
8 are formed. In the third groove 28, the lead portions 15a and 15b fitted in parallel with each other and the intermediate portion between the ends 5a and 5b of the winding are bridged.

Leads 15a, 15b and end 5 of winding
The intermediate portions a and 5b are connected by pressing the pair of terminal members 19a and 19b from above in the direction of the bottom of the case 11 (third direction), as shown in FIG. The pair of terminal members 19a and 19b have connection pieces 29a and 29b respectively formed with a pair of slits 19c extending in the third direction. Terminal members 19a, 1
As shown in FIG. 5, the pair of slits 19b of FIG.
The lead portions 15a and 15b and the intermediate portions of the winding ends 5a and 5b are press-fitted and connected. A pair of terminal members 19
a and 19b are lead wires 18 coated with insulation.
holding portions 30a, 30 holding the coating portions of a, 18b
b.

As shown in FIG. 5, the terminal members 19a, 1
9b, the lead portions 15a and 15b and the end 5 of the winding.
After connecting the intermediate portions a and 5b to each other, the inside of the case 11 is bonded by a resin material 40 as shown in FIG. In this state, the opening of the case is closed by the lid 42. At this time, it is conceivable that the resin material 40 overflows outside the lid 42. As a countermeasure, if gaps S1 and S2 are provided in advance between the lid 42 and the case wall 11a facing the lid 42 as shown in FIG. 7, even if the resin material 40 is in an uncured state, Since the resin material 40 can overflow into the gaps S1 and S2, it is possible to prevent the resin material 40 from overflowing outside the case 11.

FIGS. 8A, 8B and 8C
Shows each process of putting the lid 42 on the case 11. The case 11 has a first engaging groove 11d formed in one vertical wall portion 11c into which the lead wires 18a and 18b enter.
A second engagement groove 11f is formed in the other vertical wall portion 11e opposite to the one vertical wall portion 11c. The lid 42 is formed with a first hook portion 42d projecting outward at the tip of one of the side wall portions 42c.
A second hook portion 42f protruding outward is formed at the tip of the other side wall portion 42e opposite to 2c.

As shown in FIGS. 8A and 8B,
First, the second hook portion 42f is engaged with the second engagement groove 11f, and the lid 42 is rotated in the direction of arrow I to bring the first hook portion 42d closer to the first engagement groove 11d. When the lid 42 is further rotated, the first hook portion 42d engages with the first engagement groove 11d as shown in FIG. 8C, so that the opening of the case 11 is closed by the lid 42. be able to. When the resin material 40 in the case 11 is cured in this state, the lid 42 and the case 11 are fixed integrally, and the waterproof structure in the case 11 is obtained.

[0029]

As described above in detail, according to the structure of the present invention, the connection between the winding and the diode and the lead wire can be obtained simultaneously by one terminal, so that the connection operation is simplified easily. It works.

Further, a waterproof structure can be easily obtained by bonding an uncured resin material to the case and curing the resin material.

Further, overflow of the resin material caused by providing the lid to the case after bonding the uncured resin material can be prevented by the gap between the lid and the case.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of an electromagnetic coupling device according to the present invention.

FIG. 2 is a perspective view showing an electromagnetic coil used in the electromagnetic coupling device of FIG.

FIG. 3 is an exploded perspective view showing an electromagnetic coil used in the electromagnetic coupling device of FIG. 1 and a ring body for housing the electromagnetic coil.

FIG. 4 is an exploded perspective view showing a connector used in the electromagnetic coupling device of FIG. 1;

FIG. 5 is a perspective view showing an assembled state of the connector shown in FIG. 4;

FIG. 6 is an exploded perspective view showing the connector and the lid shown in FIG.

FIG. 7 is a cross-sectional view showing a state where a lid is provided on the connector shown in FIG. 6;

8A is a cross-sectional view showing a state where one side of a lid is engaged with the connector shown in FIG. 6, FIG. 8B is a cross-sectional view showing a state where the lid is being rotated, and FIG. FIG. 4 is a cross-sectional view showing a state where a lid is put on the connector.

FIG. 9 is a sectional view showing a conventional electromagnetic coupling device.

FIG. 10 is a plan view showing a configuration of a terminal block used in the electromagnetic coupling device shown in FIG.

FIG. 11 is a sectional view showing another example of a conventional electromagnetic coupling device.

FIG. 12 is a perspective view showing an electromagnetic coil used in the electromagnetic coupling device of FIG. 11;

FIG. 13 is an exploded perspective view showing an electromagnetic coil used in the electromagnetic coupling device of FIG. 11 and a ring body that houses the electromagnetic coil.

[Explanation of symbols]

 1,200 Mounting plate 3,300 Yoke 5,400 Electromagnetic coil 5a, 5b End of winding 6,455 Ring body 6a First ring 6b Second ring 6c Bottomed part 7 Through hole 13 Case 15,133 Diode 15a, 15b Diode lead 18a, 18b Lead wire 19a, 19b Terminal member 19c, 136 Slit 23 Case hole 28 Third groove 40 Resin 42 Lid 42d First hook 42e Other side wall 42f Second Hook 100 Electromagnetic clutch 118 Box 121 Housing 130, 131 Terminal 160 Terminal block 405a, First lead wire 600 Rotor

Claims (4)

(57) [Claims] 1. An annular case in which an electromagnetic coil is provided, and an insulating case fixed to the yoke, wherein the yoke has a cylindrical ring body into which the electromagnetic coil is fitted and fixed, The ring body has a first ring portion, a second ring portion disposed outside the first ring portion, and a bottomed portion connecting one end sides of the first and second ring portions. In the electromagnetic coupling device, the bottomed portion leads out both ends of the winding of the electromagnetic coil.
Have that through-hole, wherein the case the cable from the through hole
A case hole that guides the inside of the case to the inside of the case, wherein the case is bent and fitted to the end of each of the windings guided to the inside of the case from the through hole and the case hole in a direction away from each other ; third groove and is of the formation of crossing the groove, the second groove fitting the respective leads of the parallel and diode groove to the first, said first and second groove
Are further has a pair of terminal members connected to the lead wire so as to conduct an end of the lead portion enters the groove of the third and the winding, the terminal member HashiWataru said third groove electromagnetic coupling device, characterized in that it has a connection piece in which a slit is formed to fit with press-fitted into each of the ends of the lead portions and the winding is. 2. The electromagnetic coupling device according to claim 1, wherein
Characterized in that it has a lid that closes the opening of the case while bonding the lead parts and the uncured resin material and connecting the terminal member and the end portion of the winding to each other inside the case Electromagnetic coupling device. 3. The electromagnetic coupling device according to claim 2, wherein
Wherein the case forms the vertical wall portion of one of said lead wire enters
It has a first engaging groove which forms, and a second engaging groove formed in the other vertical wall portion opposite to the one of the vertical wall portion said, the lid
Has a first hook portion projecting outwardly at the distal end of the one side wall portion, and a second hook portion projecting outwardly at the tip of the other side wall portion, the inside the case In a state where the uncured resin material is accommodated, the first hook portion is engaged with the first engagement groove, and the second hook portion is engaged with the second engagement groove. An electromagnetic coupling device. 4. The electromagnetic coupling device according to claim 2, wherein
Prevented from the overflow uncured resin material to the outside between the wall and the lid of the case that the lid faces
Electromagnetic coupling device is characterized in that a gap for.